Assessments - 2, GPA: 4
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Facilidade de uso
Unplug the tool before changing accessories or making adjustments. WARNING Selecting Speed The speed control dial on these hammers allows the user to adjust the rotating speed (RPM) and the impact rate (BPM) of the tool. To change the speed, set the speed control dial to the desired setting. • Lower speeds provide more control when starting holes and reduce 'spalling' on breakthrough. Spalling occurs when pieces of material chip off around the drilled hole on breakthrough. When chiseling in soft or brittle materials, use lower speeds to reduce damage to surrounding areas of the material. • Higher speeds provide faster penetration when drilling and chiseling in demolition work. Selecting Action Cat. No. 5337-20 The cat. no. 5337-20 demolition hammer is for "hammering-only". No rotation is available. Only chisels and other "hammering-only" accessories should be used. Cat. No. 5339-20 (Fig. 3) The cat. no. 5339-20 demolition hammer is for "hammering-only". No rotation is available. The action selector is used to select the action: Fig. 3 Hammering Only Chisel Adjustment 1. Hammering only. For use with "hammering only" accessories. Use this setting for chiseling. 2. Chisel adjustment. Use this setting to adjust the angle of the chisel blade in relation to the tool. With a chisel mounted in the tool, twist the chisel to the desired angle. Then, rotate the action selector to the "hammering only" setting for use. NOTE: To engage the hammering mechanism, maintain pressure on the bit/chisel. When pressure is released, hammering stops. Cat. No. 5340-20 The cat. no. 5340-20 rotary hammer has "hammering-only" and "hammering with rotation", depending on the type of shank inserted into the tool. For "hammering-only": Insert a chisel or other "hammering-only" accessory with a 3/4" Hex with 21/32" Round shank into the nose of the tool (see "Inserting Bits and Chisels"). The rotational drive mechanism will run but not engage with the chisel, resulting in "hammering-only" action. For "hammering with rotation": Insert a drill or coring bit with a spline shank into the nose of the tool (see "Inserting Bits and Chisels"). The rotational drive mechanism engages with the bit, resulting in "hammering with rotation" action. Cat. No. 5342-20 (Fig. 4) Cat. no. 5342-20 rotary hammer has "hammering-only", "hammering with rotation", and "chisel adjustment" settings. The action selector is used to select the action: Fig. 4 Hammering Only Hammering with RotationChisel Adjustment 1. Hammering only. For use with "hammering only" accessories. Use this setting for chiseling. 2. Hammering with rotation. Use this setting for drilling holes with drill bits. Do not use "hammering with rotation" when using chisels or other "hammering-only" accessories. 3. Chisel adjustment. Use this setting to adjust the angle of the chisel blade in relation to the tool. With a chisel mounted in the tool, twist the chisel to the desired angle. Then, rotate the action selector to the Hammering only setting for use. NOTE: To engage the hammering mechanism, maintain pressure on the bit/chisel. When pressure is released, hammering stops. WARNING To reduce the risk of injury, when using chisels or other hammering- only accessories in cat. no. 5342-20, the action selector must be set to the "hammering only" position. Starting and Stopping the Tool 1. To start the tool, pull the trigger. 2. To stop the tool, release the trigger. Locking the Trigger (Cat. No. 5337-20, 5339-20 only) The lock button on the demolition hammers holds the trigger in the "On" position for continuous use. 1. To lock the trigger, hold in the lock button while pulling the trigger. Release the trigger. 2. To unlock the trigger, pull the trigger and release. The lock button will pop out. page 7 Cold Hammering If the hammer is stored for a long period of time or at cold temperatures, the lubrication may become stiff and the tool may not hammer initially or the hammering may be weak. If this happens: 1. Insert a chisel into the tool. 2. Pull the trigger and apply the chisel against a scrap piece of concrete. 3. Turn the tool On and Off every few seconds. After 15 seconds to 2 minutes, the tool will start hammering normally. The colder the hammer is, the longer it will take to warm up. Operator Force These hammers feature the Vibration Isolation System to provide the operator with comfort without sacrificing power or performance. The motor housing is suspended independently from the switch handle. Insulating elements absorb vibration when hammering and drilling. Ideal operator force compresses the handle slightly and allows the tool to work aggressively while the handle provides maximum vibration dampening. Excessive operator force compresses the handle too far and reduces the vibration dampening. Users will be able to feel the difference and should adjust the force to the handle accordingly. WARNING Applying greater pressure does not increase the tool's effectiveness. If the applied working pressure is...